If user has paid, show page? using paypal

[KRMwebdesign]

I'm trying to set up an online payments system using Paypal. I've searched for scripts to help me out but they're all in php and my site is in ASP.

Basically I need some sort of script to show the page only after a user has paid through paypal. Would I have to set up a check box column in my database and use a redirect or does paypal have special help for this that I haven't yet found?

Any help or nudges in the right direction would be much appreciated.

[wyweb]

Step 3 in creating a buy button in paypal... "Customize advanced features"

You have options to:

Take customer to a specific page (URL) after checkout cancellation:

or:

Take customer to a specific page (URL) after successful checkout:

[KRMwebdesign]

Oh great yes I've been looking for. Thanks very much.

[KRMwebdesign]

If I'm passing an asp variable from a page on my server - on to paypal check out page - and then back to my server will this work?

For instace, if I'm going from articles.asp?id=<%=articles("id")%> - to paypal checkout - back to article. What would be the best way to do this? at the moment I'm requesting a query string. The session variables I have on the page refer to the buyer's login details. I don't know. Does anyone know what I can do here?